ASTM C1183 C1183M-2013(2018) Standard Test Method for Extrusion Rate of Elastomeric Sealants.pdf

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1、Designation: C1183/C1183M 13 (Reapproved 2018)Standard Test Method forExtrusion Rate of Elastomeric Sealants1This standard is issued under the fixed designation C1183/C1183M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year

2、 of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers two laboratory procedures fordetermining the extrusion rate of elastomeric sealants for us

3、e inbuilding construction.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may resu

4、lt in non-conformancewith the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability

5、 of regulatory limitations prior to use.1.4 There is no known ISO equivalent to this test method.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International S

6、tandards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsD1475 Test Method for Density of Liquid Coatings, Inks,and Related ProductsD2452 Test Meth

7、od for Extrudability of Oil- and Resin-BaseCaulking Compounds3. Terminology3.1 DefinitionsSee Terminology C717 for applicable defi-nitions of the following terms: caulking, compound, elasto-meric and nonsag sealant, sealant, latex sealant.4. Significance and Use4.1 Sealants are supplied with various

8、 rheological propertiesranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon openingthe container. Multicomponent sealants are supplied as a basecomponent(s) and a curing agent separately packaged. Aftermixing the two or more parts, the sealant

9、 is ready forapplication. This test method is intended to provide a means tomeasure the extrusion rate spanning the range of rheologicalproperties.4.2 This test method also covers the option of measuring thefreeze-thaw and heat stability of such sealants.4.3 This test method provides for an option o

10、f either a metalor plastic nozzle. It is intended that the metal nozzle be usedwhen greater precision is required, such as in ASTM specifi-cations. The plastic nozzle may be used for general screeningof sealant properties or for developmental purposes when alarge number of test specimens are being t

11、ested.4.4 This test method measures the volume of sealant ex-truded over a given period of time at a given pressure (kPa orpsi).5. Apparatus5.1 High Density Polyethylene Cartridge, with plunger andcap, 177 mL 6 fluid oz capacity, with the front end having aninside diameter of 13.7 6 0.05 mm 0.540 6

12、0.002 in.5.2 Nozzle.5.2.1 Metal Nozzle, threaded to fit threaded end of polyeth-ylene cartridge with the dimensions given in Fig. 1.5.2.2 Polyethylene Cartridge Nozzle, 64 mm 212 in. inlength with 3mm 18 in. orifice5.3 Air Supply, to provide 280 6 7 kPa 40 6 1 psi pressurewith appropriate fittings a

13、nd air lines to attach to an airpowered gun for convenience of use.5.4 Caulking Gun, 177 mL 6 fluid oz capacity, air pow-ered.5.5 Freezer, capable of maintaining 17 6 1C 0 6 2F.5.6 Circulating Air Oven, capable of maintaining 50 6 1C122 6 2F.1This test method is under the jurisdiction ofASTM Committ

14、ee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved June 1, 2018. Published June 2018. Originallyapproved in 1991. Last previous edition approved in 2013 as C1183-13. DOI:10.1520/C1183_C1183M-13R18.2For referenc

15、ed ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Con

16、shohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade O

17、rganization Technical Barriers to Trade (TBT) Committee.15.7 Time Device, a clock or stop-watch graduated in sec-onds.5.8 Small Container, can, cup, and so forth, as receiver forextruded sealant.5.9 Balance, accurate to 60.1 g 0.035 oz.5.10 Pycnometer, or suitable apparatus to obtain a specificgravi

18、ty.5.11 Thermometer.5.12 Spatula.6. Test Conditions6.1 Unless otherwise specified by those authorizing thetests, standard conditions as defined by Terminology C717shall be used.7. Procedure A7.1 Condition the unopened container of sealant for at least16 h at standard conditions.7.2 Determine the spe

19、cific gravity of the sealant as de-scribed in Test Methods D2452 or D1475, or use anotherscientifically correct technique. For multiple componentsystems, mix 100 g sealant 4 oz with the proper amount ofcuring agent.NOTE 1Curing times and conditions for multicomponent mixedcompounds may vary. Therefo

20、re, the length of time between mixing thecomponents and testing the extrusion rate may vary. Record the time frommix completion to the start of the extrusion test.7.3 For multiple component sealants, mix 400 g 14.1 ozsealant with the proper amount of curing agent. Follow themixing directions as reco

21、mmended by the manufacturer.7.4 Place a sufficient amount of sealant into the polyethyl-ene cartridge to fill it completely with the plunger in place, andlevel with the back of the cartridge.NOTE 2The cartridge filling is most easily accomplished by extrudingthe sealant into the test cartridge throu

22、gh the nozzle end. Avoid any airentrapment as this will significantly affect the accuracy of the results.7.5 Attach the nozzle to the cartridge; connect the air supplyand immediately extrude a small amount of material tocompletely fill the nozzle. Wipe off the end of the nozzle witha paper towel.7.6

23、 Extrude the sealant at 280 6 7 kPa 40 6 1 psi pressureinto the preweighed container (nearest 0.1 g) for 60 s. Makesure all of the material that has exited the end of the nozzle isin the container.7.7 Weigh the container to the nearest 0.1 g and subtract theinitial weight, to obtain the weight of th

24、e extruded sealant.Convert the weight of the sealant to volume of sealant bydividing the weight by the specific gravity. If all the material isextruded in less than 60 s, note the length of time required andcalculate the volume of sealant that would have been extrudedin 60 s as follows:Number of gra

25、msNumber of seconds360 seconds1 minute31specific gravity5Number of millilitersminutes8. Procedure B8.1 Subject the sealant in its original container to 5 freeze-thaw cycles, each cycle consisting of 16 h at 17 6 1C 0 62F and8hat236 1C 73.4 6 2F, followed by 7 days at50 6 1C 122 6 2F.8.2 Condition th

26、e sealant which is still in its originalcontainer, for a minimum of 5 days at standard conditions.8.3 Condition the polyethylene cartridge for a minimum of16 h at the same conditions as specified in 8.2.8.4 Place a sufficient amount of sealant into the polyethyl-ene cartridge to fill it completely w

27、ith the plunger in place, andlevel with the back of the cartridge.8.5 Attach the nozzle to the cartridge; connect the air supplyand immediately extrude a small amount of material tocompletely fill the nozzle. Wipe off the end of the nozzle witha paper towel.8.6 Extrude the sealant at 280 6 7 kPa 40

28、6 1 psi pressureinto the preweighed container (nearest 0.1 g). Make sure all ofthe material that has exited the end of the nozzle is in thecontainer. Record the elapsed time to extrude the sealant.8.7 Weigh the container to the nearest 0.1 g and subtract theinitial weight, to obtain the weight of th

29、e extruded sealant.8.8 Calculate the number of grams per second extruded.NOTE 3The cartridge filling is most easily accomplished by extrudingthe sealant into the test cartridge through the nozzle end. Avoid any airentrapment as this will significantly affect the accuracy of the results.9. Report9.1

30、The report on the extrusion rate of sealants shall includethe following information:9.1.1 The trade name and other identification of the sealant,9.1.2 The procedure used,9.1.3 The specific gravity of the sealant,9.1.4 The temperature of the sealant, if the sealant wasmulticomponent,9.1.5 Procedure A

31、The number of mL (rounded to thenearest 0.1) extruded in 60 s, reported mL/min.9.1.6 Procedure BThe number of grams per second ex-truded.9.1.7 The type of nozzle used.FIG. 1 Metal Nozzle DimensionsC1183/C1183M 13 (2018)29.1.8 Any variations, specified or otherwise, from the abovedescribed test metho

32、d, including heating of sealant or varyingthe length of the curing period or temperature and humidityconditions.9.1.9 For multiple component sealants, describe the mixingsystem, the time taken to mix and the time from mix comple-tion to the start of the extrusion test.10. Precision and Bias310.1 Pre

33、cision:10.1.1 Round-robin testing of 5 single component sealantsby six laboratories, using aluminum nozzles, indicates theprecision between laboratories is 60 % of the test result (twostandard deviations). Precision within a laboratory is estimatedat 10 % of the test result (two standard deviations)

34、. See Table1.10.1.2 The precision of this test for multiple componentsealants is not known and is subject to time of mixing, mixingtechnique and equipment, temperature rise caused by mixing,and elapsed time from mix completion to extrusion. See Table1.10.2 BiasThere is no statement on bias at this t

35、ime.11. Keywords11.1 elastomeric sealant; extrusion rate; extrudability;freeze-thaw stability; latex sealant; sealantASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly

36、advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, eit

37、her reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend

38、. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Ind

39、ividual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured

40、 from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ data are available from ASTM International Headquarters. RequestRR:C24-1010 and 1016.TABLE 1 Precision SummaryExtrusion Rate of ElastomericSealantsMaterialAverageValueRepeat-abilityBetweenLabPercentWithinPercentBetweenPrecisionBetweenA 27.201 0.884 7.260 3.249 26.691 7.314B 44.589 2.036 13.802 4.566 30.953 13.951D 49.989 0.994 14.496 1.989 28.999 14.530C 73.071 2.718 21.283 3.721 29.126 21.456E 83.089 5.942 20.679 7.152 24.887 21.516One Standard Deviation 4.135 28.131C1183/C1183M 13 (2018)3